Eyeglasses.



PATENT HENRY. E. KIRSTEIN AD WILLIAM E. MCDONELL, OF ROCHESTER, NEW YORK,

ASSIGNORS TO E. KIRSTEINSONS COMPANY, OF ROCHESTER, NEWYORK,"A.

CORPORATIGN:

Specification of Letters Patent.

EYEGLASSRS.

Patenten Jaulas, relie.

application filed September 23, 1916. Serial No. 121,867. v

' To allfwhom 'Zt mag/concern.' Be `1t known that we, HENRY E.'KIRSTEIN and VILLIAM- E. `lvlcDomann, citizens of the United States', and residents'of Rochester, in thecounty of Monroe and State of New York, have inventedcertain neviT and useful Improvements in Eyeglasses, of which the'following is a specification.

The present invention relates to eyeglasses' and spectacles, and more particularly to the type in which the lenses are circular and fit in circular frames, an object of this .invention being to provide a` simple, efficient and inexpensive means for holding the lenses vagainst turning in their frames.`

To this and other ends, the invention consists of certain parts and combinations of parts all of which will be hereinafter described, the novel features being pointed out in the appended claims.

In the drawings:

Figure l is a rear view of eyeglasses in which this invention is embodied;

Fig. 2 is an enlarged view of one of the lenses showing its frame in section ;v

Fig. 3 is a section on the line 3 3, Fig. 2;

F ig. 4 is a detail view of the frame in proximity to one of the mountings to which a temple is secured;

Fig. 5 is a perspective view .of one of the lens locking devices;

F ig.- 6 is a detail view of a modification in which the ends ofthe split frame are vturned outwardly to serve' as ears for a temple; p

Fig. 7 is a perspective view of another embodiment of the device for preventing the turning of the lens; and

Fig. 8 is a detail sectional view showing the arrangement of the device of Fig. 7 on eyeglasses.

At the present time, there is a large 'de'- mand for eyeglasses in-which thelenses are circular in form and are mounted in 'circular frames preferably made from a cellulose compound, such as celluloid. When made from a cellulose compound, the frames expand to-.a reat extent during hot weather, thus permitting the lenses to turn and. cans-- ing their proper optical relations to the eyes to be destroyed.

, Accordingto this invention, this turning l of the lensfes is 'eliminated by a devlce ywhlch lies in asplit of the frame which surrounds he lens and projectsfintfo afnotch the ens.

Referring more particula'rlymto the "drawf ings,v 1 indicates the lenses ef rtheeye lasses each surrounded by afframjf," pre erably made of a cellulose compound the rtwo frames being connected by a, bridge 3, the ends of which. carry mounts 4 clamped on the frames 2 in any desired manner.

The frames 2 are split at 5 and in each of these splits a lens lock 6 is arranged, one end of the lock projecting into a notch or recess 7 formed in the periphery of the lens. The twoends of the -frame on opposite sides of the split are held together in any suitable manner as, for instance, by a mount 8 fora temple 9, or the'lilie, to bridge the split portion, said mount being clamped to the trame preferably by'being bent or rolledv about the frame. Projections 10 on the inner face of the mount enter into the soft material of the frame and hold' the latter against movement. This arrangement also confines the lens look 6 against lateral or sidewise movement. I

Another manner of securing the lens lock is shown in Fig. 6 where' the frame 2.a is Jformed of metal and has its ends bent laterally at 8a to provide spaced projections for receiving the temple 9 between them. Between `the ends of the frame or in the split, the lens lock 6a is arranged, a lpin 6b being passedthrough the portions 8a andthe lens *lock 6a to hold the latter in place. j

r is shown inv 8, the loop 11 lying between the ends ofthe split frame 2 and the arms' 12 and -13 with the eyes 14 being Vforced into the plasticzmaterial of the frame. The eyes 14 which may be omitted, serveto lock the frame to the ,mounting 8 in the same manner as the projections 10 of the embodiment shown `in Fig. 2..

. From the foregoing, it will 'be' seen that there has been provided a lens lock which lies in a split in the lens frame and en ages V I within anotch in a lens to hold the atter against turningl:` This construction is simple, effective; and inexpensive to manufacture, andit is so located thatit is inconspicuous. A mount for the temple or other pince-nez or any other glasses used for l part serves to hold the lock in place While, at the same time, hiding the same from view.

The term eyeglasses is used herein in the broad sense as referring to spectacles opposite sides of said lens locking device to conne the latter in the split. e

2. Eyeglasses coiiipri'sing a lens formed with a notch, a split frame surrounding said lens, a separate plate arranged in the split of the frame and projecting into the notch, and a motuiting engaging die frame on opposite sides of the split to hold the frame together and lying on'opposite sides of the plate to hold the latter in the split.

3. An eyeglass frame comprising a ring 30 formed of non-metallic material and having a split. and a mounting for engaging said rim on opposite sides of the said split having projections adapted to enter the non-metallic rini'to hold the latter to the mounting.

HENRY E. KIRSTEIX. WILLIAM E. MCDOXELL. 

